AMD Radeon RX 7900 GRE vs AMD Radeon RX 6600S

Updated Nov 2026 · Scored by the Let’s Compare Data Engine · How we score

For most buyers the AMD Radeon RX 7900 GRE is the better pick — it scores 77/100 to the AMD Radeon RX 6600S's 37, leading on Memory and API Support. Choose the AMD Radeon RX 6600S instead if core specifications matters most to you, where it comes out ahead.

Verdict

Our overall take, at a glance

AMD Radeon RX 7900 GRE leads overall

AMD Radeon RX 7900 GRE

AMD Radeon RX 6600S

Why it stands out

Core Specifications Maximum Power: 260 W (225% more)
Memory Capacity: 16 GB (300% more)
Memory Bandwidth: 576 GB/s (157% more)

Winner by category for AMD Radeon RX 7900 GRE vs AMD Radeon RX 6600S
Category	AMD Radeon RX 7900 GRE	AMD Radeon RX 6600S	Winner
Core Specifications	38	62	AMD Radeon RX 6600S
Memory	86	27	AMD Radeon RX 7900 GRE
API Support	52	48	AMD Radeon RX 7900 GRE
Theoretical Performance	85	36	AMD Radeon RX 7900 GRE
Benchmark	79	35	AMD Radeon RX 7900 GRE
Miscellaneous	87	32	AMD Radeon RX 7900 GRE

In-depth analysisAI

AI-generated from the cited sources — may be incomplete or inaccurate; verify important details before deciding · generated Nov 2026.

AMD Radeon RX 7900 GRE

The AMD Radeon RX 7900 GRE is a desktop graphics card based on the RDNA 3 architecture, utilizing a cut-down version of the GPU die found in the RX 7900 XT. Released around the $550 price mark, it is designed for PC gamers seeking robust high-refresh 1440p gaming and entry-level 4K performance. It positions itself as a cost-effective alternative between mid-range and top-tier enthusiast GPUs.

Best for High-frame-rate 1440p gaming in rasterization-heavy titlesBest for Value-focused builds targeting mid-to-high $500 GPU budgets

Pros

Outperforms similarly priced Nvidia competitors in traditional rasterized gaming performance
Provides strong cost-per-frame value at 1440p and 4K resolutions
Offers competitive ray-tracing capability compared to previous-generation AMD offerings

Cons

Ray-tracing performance generally falls short of higher-tier Nvidia cards
Power consumption and thermal hotspots require adequate system cooling

AMD Radeon RX 6600S

The AMD Radeon RX 6600S is a dedicated graphics processor designed for mobile platforms, utilizing a 7-nanometer manufacturing process. It comes equipped with 8 GB of dedicated GDDR6 memory on a 192-bit bus, achieving a memory bandwidth of 432 GB/s. With an adjustable power envelope between 50 and 100 watts, it balances thermal efficiency and performance for portable gaming setups.

Best for Mid-range gaming on portable and thin-and-light laptop designsBest for Content creation tasks requiring dedicated VRAM on the go

Pros

Dedicated 8 GB GDDR6 memory prevents the system from sharing main memory for graphical tasks
High memory bandwidth of 432 GB/s supported by a wide 192-bit bus
Flexible power requirements from 50W to 100W allow for integration into thinner laptop form factors
Up-to-date API support including Vulkan 1.3 and DirectX 12

Cons

Peak single-precision performance of 7.0 TFLOPS may limit frame rates on demanding modern AAA games at high settings

Value for Money

Which is the better deal for the price

Pre-filled with launch prices where known — enter today's price for an up-to-date check. Use the same currency for both.

AMD Radeon RX 7900 GRE

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AMD Radeon RX 6600S

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Performance

Higher benchmark score = faster

AMD Radeon RX 7900 GRE27,450

AMD Radeon RX 6600S13,569

See the raw benchmark values →

Benchmark score — a measured indicator of raw performance, not a guarantee of real-world speed.

Review Videos

Hand-picked expert reviews for each product

Detailed Specifications

The full spec sheet, side by side

Core Specifications

Feature	AMD Radeon RX 7900 GRE	AMD Radeon RX 6600S
Base Frequency	1.27 GHz	2.359 GHz
Base Power	N/A	N/A
Maximum Frequency	2.245 GHz	2.655 GHz
Maximum Power	260 W225% more	80 W
Lithography Process	5 nm29% less	7 nm

Memory

Feature	AMD Radeon RX 7900 GRE	AMD Radeon RX 6600S
Capacity	16 GB300% more	4 GB
Technology
Bus Width	256 bit	128 bit
Bandwidth	576 GB/s157% more	224 GB/s
Is Shared	No	No

API Support

Feature	AMD Radeon RX 7900 GRE	AMD Radeon RX 6600S
DirectX Version	12	12
OpenGL Version	4.6	4.6
Vulkan Version	1.48% more	1.3
OpenCL Version	2.1	2.1

Theoretical Performance

Feature	AMD Radeon RX 7900 GRE	AMD Radeon RX 6600S
Pixel Rate	269.4 GP/s	120.3 GP/s
Texture Rate	718.4 GT/s	244.2 GT/s
Performance (FP16)	46 TFLOPS194% more	15.63 TFLOPS
Performance (FP32)	45.98 TFLOPS489% more	7.81 TFLOPS
Performance (FP64)	718 GFLOPS	448.1 GFLOPS

Benchmark

Feature	AMD Radeon RX 7900 GRE	AMD Radeon RX 6600S
G3D Mark	27,450102% more	13,569

Miscellaneous

Feature	AMD Radeon RX 7900 GRE	AMD Radeon RX 6600S
Release Date	July 27, 2023	January 4, 2022
Platform

Specification Note

Specifications are compiled from official manufacturer data and other reliable internet sources. Some features may vary by region or model configuration.

Frequently Asked Questions

Common questions about AMD Radeon RX 7900 GRE vs AMD Radeon RX 6600S comparison

Based on our overall comparison score, AMD Radeon RX 7900 GRE rates higher at 83/100 versus 46/100 for AMD Radeon RX 6600S — a 37-point lead. AMD Radeon RX 7900 GRE is the stronger overall pick, though the right choice still depends on which specs matter most to you; the full spec table above breaks down every difference.

AMD Radeon RX 7900 GRE and AMD Radeon RX 6600S are compared side by side above across every spec in the gpus category — including performance, features and design — each scored 0–100 so you can see exactly where one leads the other. Our overall scores are 83/100 for AMD Radeon RX 7900 GRE and 46/100 for AMD Radeon RX 6600S.

If you want the higher-rated gpus option overall, AMD Radeon RX 7900 GRE (83/100) edges out AMD Radeon RX 6600S (46/100). But if AMD Radeon RX 6600S is cheaper or stronger on the specific specs you care about, it can still be the better buy — use the spec table and strengths profile above to decide.